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 The Neritic Zone includes:  Supratidal Zone  Intertidal Zone  Subtidal Zone.

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Presentation on theme: " The Neritic Zone includes:  Supratidal Zone  Intertidal Zone  Subtidal Zone."— Presentation transcript:

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3  The Neritic Zone includes:  Supratidal Zone  Intertidal Zone  Subtidal Zone

4  Supratidal zone:  Harsh conditions  Dry, only stenohaline (organisms that need low salinity) organisms can live here  Air temperature determines zone temperature (not water)  Water splashes from waves or wind sprays  One organism adaptation is to burrow  Above the high tide line  Salt grass, snakes, mice, ghost crabs

5  Intertidal Zone:  Area of great change  Waves spill over/breakers  Area of great adaptations for living with or without water  Tidal patterns determine temperature  Euphotic (light can go through the water)  Sessile (attached) benthic (bottom) organisms  Burrowing organisms  Adaptations to prevent drying out-close up/burrow  Adaptations to cling to rocks  Between the low tide line and the high tide line  Green algae, barnacles, tube worms

6  Subtidal Zone:  Always covered with water  Complete waves  High productivity (lots of biomass produced)  Lots of nutrients  Euphotic ( light goes through water)  Warm  Sessile (attached) and vagrant (move) benthic (bottom) organisms  Nektonic (free swimming) and planktonic (drifters) organisms  Lots of oil drilling here  Between the low tide line and the edge of the continental shelf  Sailfish, dolphins, sea turtles, kelp

7  Ocean Zone includes 4 smaller zones  These zones are determined by availability of light  Epipelagic Zone (The sunlight zone)  Mesopelagic Zone (The twilight zone)  Bathypelagic Zone (The midnight zone)  Abyssopelagic Zone (The Abyss zone)

8  Epiupelagic Zone (The sunlight zone)  Euphotic  Warm  Fewer nutrients  Nektonic (free swimming) and planktonic (drifters) organisms  Complete waves  Extends from the continental shelf  Detritus (organic material) falls below like snow  Lower productivity (production of biomass)  Sharks, whales, Sargassum seaweed

9  Mesopelagic Zone (The twilight zone)  Fading light/twilight/disphotic  Temperature drops rapidly/permanent thermocline  Pressure increases  Nektonic and zooplankton  Less photosynthesis/ respiration continues  Detritus (organic material)/marine snow  Low productivity (production of biomass)  Zooplankton, squid

10  Bathypelagic Zone (The midnight zone)  Completely dark/aphotic  Isothermal (same temperature throughout)/cold  Pressure great  Organisms adapted to pressure and no light  Nektonic  Detritus (organic material)/marine snow  Low productivity (production of biomass)  Angler fish

11  Ayssopelagic Zone (The abyss zone)  Completely dark/aphotic  Isothermal (same temperature throughout)/cold  Pressure greatest  Geothermal vents providing for chemosythetic production of biomass  Higher productivity (production of biomass)  Marine debris (snow) accumulates  Special adaptations of organisms  Vagrant (move) benthic, nektonic,bacteria  Giant tube worms, blind crabs, chemosynthetic bacteria


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